Stem Cell Therapy Side Effects and Safety: Questions to Ask Your Doctor
Quick answer: The most common side effects of same-day, autologous stem cell procedures are bruising, swelling and soreness at the harvest and injection sites, usually settling within one to two weeks. Infection, lumps or irregularities are less common. The biggest safety factors are who performs the procedure, how cells are processed and whether the claims made are realistic.
Common side effects
- Bruising and swelling at the fat or bone marrow harvest site
- Tenderness, redness or swelling where cells are injected
- Temporary stiffness or soreness
- Mild fatigue on the day of treatment
Less common risks
- Infection at harvest or injection sites
- Lumps, irregular contour or uneven results in the face
- Reactions to local anaesthetic or sedation
- Bleeding, particularly if you take blood thinners
Products using cultured cells or donor-derived material can carry additional risks and require separate approval, so always ask what is being injected.
Who should avoid or postpone treatment
- Pregnant or breastfeeding women
- People with active infections or uncontrolled medical conditions
- Those with a history of certain cancers, unless cleared by their specialist
- Anyone with unrealistic expectations of reversing ageing
Red flags at a clinic
- Guaranteed results or claims to cure chronic disease
- No clear explanation of cell source or processing
- Pressure to pay large sums immediately
- No physician involvement in consultation or procedure
Questions to ask your doctor
- Are the cells mine, and are they cultured or processed the same day?
- Who will perform the harvest and injection?
- What side effects do your patients most commonly experience?
- What happens if a complication occurs after I fly home?
- What evidence supports this treatment for my goal?
Frequently asked questions
Can my own cells cause rejection?
Rejection is unlikely with your own minimally processed cells, but procedural risks still apply.
How soon can I exercise?
Most doctors advise avoiding strenuous exercise for several days. Follow your written aftercare.
Key takeaways
- Most side effects are temporary and procedural.
- Ask clearly what is injected and by whom.
- Avoid clinics that guarantee results.
This article is for general information and is not medical advice. Suitability, risks and expected results should always be discussed individually with a licensed physician.
